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Brums [2.3K]
3 years ago
11

Which expression is equivalent to 9x + 54 – 27 + 3y + 6y?

Mathematics
1 answer:
sammy [17]3 years ago
5 0
9y+9x=27
x+y=3


<em><u /></em><u>Answer:</u> <em>x</em>+<em>y</em>=3
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The price of a microwave oven went up from $75 to $90; then went on sale for $57. What is the percent decrease from the original
Arisa [49]

Answer:

<u>The percent decrease of the microwave from the original price to the sale price is 24%</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Original price of a microwave = $ 75

Mark-up price of the microwave = $ 90

Sale price of the microwave = $ 57

2. What is the percent decrease from the original price to the sale price?

For answering this question we will use the Direct Rule of Three this way:

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75                 100%

57                   x

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x = 76

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<u>The percent decrease of the microwave from the original price to the sale price is 24%</u>

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3 years ago
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Solve for n as follows:

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Hope this helps! :)
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Step-by-step explanation:

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